Some feeds are more active than others. Recent oil spill, earthquake, and H1N1 headlines have given @NLM_SIS (Specialized Information Services in toxicology, environmental health, and disaster information) plenty to tweet about. For a steady stream of consumer health news, follow @medlineplus4you.

@NCBI just started in March, will keep users informed about new features in NCBI’s literature, molecular biology, and genetics resources, along with news and newly published research. Sample tweet topics: GenBank Release 177.0 and Roadmap Epigenomics data.